Cheap Mercedes Benz Slk cars under £20,000

With a budget of £20,000 you can grab a great bargain. Most of the cars advertised on our site are heavily reduced in price and come with a free history check

194 Mercedes Benz Slk cars under £20,000 - 86 reductions

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Recently reduced (86)

St James Motor Company William Street, 4 Muira Estate, Hampshire

£18,990
Was £19,490 Save £500

Mercedes Benz SLK 5.4 SLK55 AMG Convertible 2dr Petrol 7G Tronic (288 g/km, 360 bhp)

Comes with alarm, immobiliser, cruise control, parktronic, leather, exterior lighting, bluetooth, adjustable steering column/wheel, headlamp wash, full service history, adjustable steering column, driver, steering wheel mounted controls, computer, air bag, serv...eee

DT Performance Cars, Unit 1A, Atherstone

£18,950
Was £19,950 Save £1,000

Mercedes Benz SLK 5.4 SLK55 AMG Convertible 2dr Petrol Automatic (288 g/km, 360 bhp)

Comes with leather, air bag, electric windows, passenger, air bag passenger, pas, air bag driver, central door locking, anti lock brakes, climate control, adjustable steering column, electronic stability programme, spare wheel, alloy wheels, alarm, electric win...eee

Vertu Volkswagen Mansfield, 206 Chesterfield Road North, Mansfield

£15,368
Was £15,860 Save £492

Mercedes Benz SLK SLK 300 AMG Sport 2dr Tip Auto

Options include led daytime running lights, sports seats, leather steering wheel, radio, passenger, usb, chrome exhaust tailpipe, glovebox, automatic headlamp activation, driver, tyre pressure monitoring system, dual stage driver/passenger airbags, speed limiter, ai...eee

Troon Cars LTD, 33 Wenlock Way, Leicester

£14,500
Was £14,990 Save £490

Mercedes Benz SLK 2.1 SLK250 CDI AMG Sport Convertible 2dr Diesel G Tronic+ Euro 5 (s/s) (204 ps)

This model has diesel, parking sensors, low mileage, audio 20, sat nav, cruise control, alloy wheels, heated front seats, air con, audio, part exchange welcome, navigation system, 2 keys, bluetooth interface, radio, climate control, finance available, leather inter...eee

Troon Cars LTD, 33 Wenlock Way, Leicester

£14,300
Was £15,500 Save £1,200

Mercedes Benz SLK 1.8 SLK250 AMG Sport Convertible 2dr Petrol G Tronic+ Euro 5 (s/s) (204 ps)

Features on this model include navigation system, anti lock braking system, airbags, rear parking sensors, part exchange welcome, parking sensors, 2 keys, automatic, alloy wheels, heated front seats, finance available, airbag, air con, rear parking sensor, leather, abs, leather in...eee

Xclusive Xports, Ashendene Farm, Bayford

£13,450
Was £13,950 Save £500

Mercedes Benz SLK 2.0 SLK300 AMG Sport Convertible 2dr Petrol G Tronic Euro 6 (s/s) (245 ps)

Includes anti lock braking system, alloy wheels, leather, heated seats, airbags, abs, leather interior, heated front seats, full service history, sat nav, airbag, driver, 18in alloy wheels, black, dab radio, parking sensors, air con, bluetooth, radio, petrol,...eee

Xclusive Xports, Ashendene Farm, Bayford

£13,450
Was £13,750 Save £300

Mercedes Benz SLK 2.1 SLK250d AMG Sport Convertible 2dr Diesel G Tronic Euro 6 (s/s) (204 ps)

Includes dab radio, audio 20, pas, anti lock braking system, leather, cruise control, radio, driver, sat nav, bluetooth, heated seats, air conditioning, service history, abs, black, 1 owner, alarm, passenger, audio, full service history, air con, airbags, all...eee

SKS Cars Ltd, 1-9 Barton Road, Milton Keynes

£12,495
Was £12,995 Save £500

Mercedes Benz SLK 1.8 SLK200 AMG SPORT EDITION 2d 184 BHP

This car has alarm system/interior protection/immobiliser, service indicator, driver, active head restraints, speed limiter, alloy wheels, remote boot release, passenger, esp, sports seats, airbags, green tinted glass, airbag, automatic, automatic headlamp activa...eee

GRS Cars, 45 Lancaster Road, Melksham

£11,995
Was £12,395 Save £400

Mercedes Benz SLK SLK 250 D AMG SPORT AUTO

Featuring 18in alloy wheels, heated front seats, black, heated front seat, audio 20, airbags, audio, radio, mot, anti lock braking system, leather interior, bluetooth, alarm, driver, bluetooth interface, automatic, navigation system, leather, airbag, pas, air ...eee

Alpha Motors (Wigan) Limited, Park Lane Garage, Wigan

£11,990
Was £12,990 Save £1,000

Mercedes Benz SLK 2.0 SLK200 AMG Sport Convertible 2dr Petrol Manual Euro 6 (s/s) (184 ps)

This car has black, warranty, passenger, electric windows, 18in alloy wheels, hpi clear, 2 keys, service history, bluetooth, cruise control, alloy wheels, leather seats, driver, climate control, alloys, leather, daytime running lights, mot, led daytime running li...eee